Hi,

I went to my local bike shop at the weekend for a road bike sizing. They use a wall mounted contraption to take my measurements and plugged these into bikefitting.com software. This output a recommended top tube size of 560mm, set tube of 542mm and stem length of 110mm. From this, the chap in the shop ruled out a few bikes (e.g. cannondale synapse and some others) based on the fact that in my recommended geometry, the reach is long compared to the ST. He suggested Bianchi frames would be a good fit (Impulso TT:550; ST:550 or Vertigo: TT:550; ST:540).

Just out of interest I plugged my measurements taken during the sizing into the sizemybike android app that I'd recently installed. The recommended geometries were completely different. I was expecting some small differences, but was really surprised that the TT was nearly 5cm shorter the stem 2cm shorter. So I tried a third calculator: argonautcyclecoaching, but this gave me another different set of results.

Needless to say I'm a tad confused about which of these is correct and whether the advice to buy a Bianchi is good (or whether any of this matters at all)!!!!

Here are the measurements I used in each of the calculators:

Here's a summary of the main bike dimensions from each of the calculators:

Here are the images of the geometries:

• From the shop:
• Form SizeMyBike:
• From Argonaught:

Any advice on this would be much appreciated.

Other info... this will be my first road bike; I will be sportive riding (including the Etape this year) so am looking for something comfortable rather than with a racing geometry; my budget is £1000 - £1400 (so the Bianchi vertigo is at the top end of that range); I will buy through the cycle to work scheme which rules out some of the online options such as Rose and Canyon unfortunately; I am very fit and flexible (if that matters!).

Many thanks in advance.

TAO